72.17% is the change from 521 to 897
Calculation steps:
[( 897 - 521 ) ÷ 521] x 100 = 72.17%
Formula
Percentage change = [(897 - 521) / 521] x 100
Subtract the new number by the original number
897 - 521 = 376
376 ÷ 521 = 0.7216890595009597
0.7216890595009597 x 100 = 72.17%